Spider Walking

Troy likes me to walk up his arm with my forefinger and middle finger. He says it feels like a spider. Apparently, my feather-like touch across his skin is ticklish, because he’ll start giggling, especially when I walk up his shoulder and get near his ear. But if I stop, he’ll grab my hand and say, “Spider walk! Spider walk!” So, I’ll make the spider walk up his arm again, met with the same squirming and giggles.